30851668542 has 16 divisors (see below), whose sum is σ = 61747459200. Its totient is φ = 10276535832.

The previous prime is 30851668541. The next prime is 30851668577. The reversal of 30851668542 is 24586615803.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 30851668491 and 30851668500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30851668541) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1829328 + ... + 1846115.

It is an arithmetic number, because the mean of its divisors is an integer number (3859216200).

Almost surely, 2^30851668542 is an apocalyptic number.

30851668542 is an abundant number, since it is smaller than the sum of its proper divisors (30895790658).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

30851668542 is a wasteful number, since it uses less digits than its factorization.

30851668542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3676847.

The product of its (nonzero) digits is 1382400, while the sum is 48.

The spelling of 30851668542 in words is "thirty billion, eight hundred fifty-one million, six hundred sixty-eight thousand, five hundred forty-two".